537139973 has 8 divisors (see below), whose sum is σ = 568969920. Its totient is φ = 505336000.

The previous prime is 537139951. The next prime is 537139991. The reversal of 537139973 is 379931735.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 537139973 - 2²⁰ = 536091397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537139903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50408 + ... + 60126.

It is an arithmetic number, because the mean of its divisors is an integer number (71121240).

Almost surely, 2^537139973 is an apocalyptic number.

It is an amenable number.

537139973 is a deficient number, since it is larger than the sum of its proper divisors (31829947).

537139973 is a wasteful number, since it uses less digits than its factorization.

537139973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12987.

The product of its digits is 535815, while the sum is 47.

The square root of 537139973 is about 23176.2803961291. The cubic root of 537139973 is about 812.8850898182.

The spelling of 537139973 in words is "five hundred thirty-seven million, one hundred thirty-nine thousand, nine hundred seventy-three".